Pick out the wrong statement. In an agitated vertical cylindrical reaction vessel, the___________________?
Correct answer: D. Dished bottom vessel has very high power consumption
- A. Ratio of liquid depth to tank diameter (i.e. the filling ratio) recommended for most purposes is 1
- B. Filling ratio for dispersing gas in a liquid is 2 for sufficiently long contact period
- C. Flat bottom and conical bottom vessels have low agitation efficiency for agitation of heavy solids in liquids
- D. Dished bottom vessel has very high power consumption
Explanation
A dished bottom generally improves liquid circulation and solid suspension, rather than requiring very high power consumption. Flat or conical bottoms are less effective for suspending heavy solids, while larger filling ratios are used for gas dispersion.
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